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Chemistry

Chemistry
Maximum permissible concentration of copper in drinking water in mg/L is

1
0.05
0.01
2

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Chemistry
What is the principal ore of aluminium ?

Dolomite
Lignite
Bauxite
Copper

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Chemistry
The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are

All listed here
Silver Iodide
Dry ice or frozen carbon dioxide
Sodium Chloride

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Chemistry
Many people died in London in 1952 as result of air pollution producing

Smog
Mist
Fog
Sleet

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Chemistry
The depletion of Ozone layer is mainly due to

Aviation fuels
Volcanic eruptions
Radioactive rays
Chlorofluorocarbons

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Chemistry
The gas that is used in the manufacture of vanaspati ghee is :

Hydrogen
Carbon dioxide
Oxygen
Nitrogen

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MORE MCQ ON Chemistry

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